With the advancements in PCB technology, the industry has gained massive attention. Nowadays, PCBs are used in almost all types of applications. In some of the applications, the ambient temperature of the PCB is normal, which means a standard PCB would work without any problem. But if the temperature is high, then the PCB could bend and change its shape. Therefore, for such areas where the operating temperature is high (greater than 170˚C), a special PCB is needed to bear that temperature.
High Tg PCBs are special PCBs that can withstand higher temperatures. You can easily find a High Tg PCB, even if the operating temperature is 200˚C. These PCBs can bear higher temperatures without changing their shapes. They are temperature-resistant and durable. They also have a low thermal expansion coefficient, which is why they do not expand at high temperatures.
FR-4 is a very common material used for High Tg PCBs. Today, we will discuss why FR-4 is used for this purpose. No doubt, there are many materials available, so why FR-4 is still preferred. Moreover, there are metal PCBs better in temperature resistance and thermal stress, but still, FR-4 High Tg PCBs are used in most places. Stay with us, and you will get the answer to your questions.